Cloud Player, the recently launched online storage service from Amazon, now works on iOS devices through the Safari web browser. When it first went live, the service – which offers 5GB of storage for free – was only accessible from Flash-supported browsers and Android devices.

When you first navigate to Cloud Player on your iOS device, you are greeted by a warning that tells you your browser isn’t supported. You can just ignore that and proceed into your music collection. Once there, you can use Cloud Player flawlessly: it will pause when you receive push notifications and incoming calls, you’ll get the blue “playing” icon in your device’s status bar, and you can control playback from the buttons in the multitasking tray.

Hints of Apple’s upcoming cloud-based storage service – now dubbed iCloud following the company’s takeover of the iCloud.com domain – have been found within the third release of the Mac OS X Lion developer preview under the ‘Castle’ codename.

First discovered by Consomac.fris a ‘Find My Mac’ feature thought to offer the same functionality as the ‘Find My iPhone’ feature built into MobileMe. What’s more interesting, however, are the strings that indicate users can upgrade from MobileMe to a service called ‘Castle.’

‘Castle’ is believed to be the codename for iCloud – the cloud-based storage service that Apple is currently developing. The service is expected to offer users a way of storing their music and other content in a digital locker, which they can then stream to internet connected devices such as the iPhone and iPad, and save storage space which would usually be taken up by storing content locally.

The service got its ‘iCloud’ name after Apple purchased the domain from a Swedish company called Xcerion, who offer a similar storage service. Xcerion received $4.5 million to rebrand the service and give up the iCloud.com domain.

Apple has reportedly purchased the iCloud.com domain for the new cloud-based storage service it is currently working on, paying $4.5 million to the previous owners who have now rebranded their service. Visitors to iCloud.com are currently redirected to the new service – now called CloudMe – but it is believed Apple will take over the domain when it’s ready.

The report comes from GigaOm, who cites a source familiar with the company:

My source, who is familiar with the company, says that Xcerion has sold the domain to Apple for about $4.5 million. Xcerion hasn’t responded to my queries as yet. At the time of writing, the Whois database showed Xcerion as the owner of iCloud.

MacRumors also received some information on the iCloud rebranding last week, but were unable to obtain enough information at the time to link the change to an Apple takeover.

Apple’s upcoming cloud-based storage service – also dubbed a ‘music locker’ – will purportedly be a solution for storing music and other content online which can then be streamed to internet connected devices, such as the iPhone, iPod touch, or iPad.

The most recent speculation has suggested that Apple is currently in the process of signing deals with all of the major music labels and getting the service ready for launch. An announcement is expected at WWDC in June.